Water Rocket Forum

Welcome to the Water Rocket Forum, sponsored by The Water Rocket Achievement World Record Association.

The largest, most sophisticated and ground breaking group supporting you, the serious water rocket flyer! Whether you are a beginner or an expert, the WRA2 has something for everyone.

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

Just getting started in water, been up to Level 2 in solid fuel rockets. (TRA 10848) I'm looking to work with single bottles starting out.

Any thoughts about the Big Foot Plus Launch system at: http://www.h2orocket.com/topic/littlefo ... tplus.html
Also a question on hand pump recommendations please. What would be a good hand pump recommendation? The website above recommends $100 type which looks great as compared to the Walmart type at around 20.00.

AntiGravity Research Corporation uses another type of pump with a reservoir on it and their pump is allot cheaper.

Also launchers are too easy to build yourself to justify paying for someone else's. As long as you use the common sense approach to safety you can build a great launcher that can withstand all kinds of launch pressures and rockets. There are tons of YouTube videos out there that will show you step by step how to create decent launchers but you can use the info to create even better ones to suit your wants and needs.

Also on the mv-50 off road enthusiasts rave about the quality. Even though they are only going up to maybe 80 psi they do that all the time. I push mine to 125and so far no issues. And I was doing that in 5,10, 20 degree weather. Perhaps when it gets hotter I will have to cool it down some but it only takes a minute or 2 to get a 9 ltr rocket to 125.

As far as the hand pump I too was looking at the Lezine (sp?) I just could not justify the $100 price tag. With the walmart Zefal I have 5 launches to 200 so far and zero issues. For $20 you can't beat the price. I could see some issues if I were only using the hand pump to fill the rockets to capacity with friction build upa hose could burst. But replacement parts are fairly inexpensive and I would think if you kept the reciept walmart would stand behind it. Heck you could probably even upgrade the rubber hose for a steel braided one if you could find a Parker store nearby.

10 4
I got the MV-50 coming, hope to do my first launches next week. So far I have found prices on the Lezine cnc pump in the
$69 range, I'm going with that one since I have a few dollars in my pocket for the first time in about a year. I normally would go with the Zefal any other time. I do plan on working with day care kids here at my school which will put some extra work on the equipment as compared to just me using it.
Thank you so much for your imput!!!
Flash